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Sorry canon users, weve been slightly skewed on Nikon lately and so here we are, new article on Canon Lens Jargon Buster. Just so you guys keep your hat on ; p . So for all you Canon gearheads! This is for you.

EOS –Electro Optic System: Canon’s current SLR camera system which was introduced in 1987. I seriously like this name. Sounds cool.

EF – Electronic Focus: Canon’s current standard lens mount designation. Compatible with all EOS bodies

EF-S: Lens mount designation for Canon’s APS-C DSLRs (EOS 300D-Digital Rebel, 350D-Digital Rebel Xt, 400D-Digital Rebel Xti, 20D, 30D, 40D). EF-S lenses are not compatible with film SLRs and DSLRs that that don’t have EF-S mount (full frame and 1.3x crop sized sensor)

IS – Image Stabilization: Canon’s optical based stabilisation system that reduces the vibrations, works similar to VR – Nikon, OS – Sigma, VC – Tamron, O.I.S – Panasonic.

L – Luxury: The designation that Canon gives to its professional range of lenses. Almost all L-series lenses have white color bodies and the red ring around the barrel. But seriously, Luxury? then the rest of us buying all these normal lenses must be “P” (poor).

UD– Ultra-Low Dispersion Glass: Special glass used for correction of chromatic aberration. ED in Nikon.

USM – Ultrasonic Motor: Auto focusing motor that offers fast and silent focusing using piezoelectric elements. There are two types.

E-M – Electronic Manual Focusing: Old type of USM lenses which deploys USM motor for electrically manual focusing.

FT-M – Full-Time Manual Focus: Manual focus is possible with lens in AF mode for fine adjustment of focus.

There you go. Your Canon Lens education in an article.

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1. LENSA’s Canon VS Nikon Wallpaper goes far!
2. Lens compatibility chart for Nikon
3. (Optimus) PRIME lens!
4. Nikon Lens Jargon Buster
5. SIGMA Lens Jargon Buster